Fig. C.1
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RADEX-calculated column density, Nbest, variation for different inputs of the beam-average volume density, nbeam. (left) Methanol (CH3OH and 13CH3OH) transitions are plotted in the case assuming a filling fraction of 1 (f = 1) or θsrc = 115″. (right) Methyl formate (HCOOCH3 A) transitions are plotted for different kinetic temperature, Tk, values. The vertical gray dashed lines show the range in beam-averaged volume densities used in our analysis.
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